Design of Folded Cascode Operational Amplifier

With the continuous development of integrated circuit technology, high-performance operational amplifiers are widely used in various circuit systems such as high-speed analog-to-digital converters (ADCs), digital-to-analog converters (DACs), switched capacitor filters, bandgap voltage reference sources and precision comparators, becoming the core unit circuits of analog integrated circuits and mixed-signal integrated circuits. Their performance directly affects the overall performance of circuits and systems. The design of high-performance operational amplifiers has always been one of the hot spots in analog integrated circuit design research, in order to meet the needs of various application fields in a compromise.